Second edition of the V.5.2 interface will align with the second editi on of the V5.1 interface.

Vmesniki V pri digitalnih krajevnih telefonskih centralah (LE) - Vmesnik V5.2 za podporo dostopovnemu omrežju (AN) - 1. del: Specifikacija vmesnika V5.2

General Information

Status
Published
Publication Date
31-Mar-2005
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2005
Due Date
01-Apr-2005
Completion Date
01-Apr-2005

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SLOVENSKI STANDARD
SIST EN 300 347-1 V2.2.2:2005
01-april-2005
Vmesniki V pri digitalnih krajevnih telefonskih centralah (LE) - Vmesnik V5.2 za
podporo dostopovnemu omrežju (AN) - 1. del: Specifikacija vmesnika V5.2

V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access

Network (AN); Part 1: V5.2 interface specification
Ta slovenski standard je istoveten z: EN 300 347-1 Version 2.2.2
ICS:
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
SIST EN 300 347-1 V2.2.2:2005 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 347-1 V2.2.2:2005
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SIST EN 300 347-1 V2.2.2:2005
ETSI EN 300 347-1 V2.2.2 (1999-12)
European Standard (Telecommunications series)
V interfaces at the digital Local Exchange (LE);
V5.2 interface for the support of Access Network (AN);
Part 1: V5.2 interface specification
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SIST EN 300 347-1 V2.2.2:2005
2 ETSI EN 300 347-1 V2.2.2 (1999-12)
Reference
REN/SPS-09060-1
Keywords
V interface, V5 interface, LE, AN
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No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1999.
All rights reserved.
ETSI
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SIST EN 300 347-1 V2.2.2:2005
3 ETSI EN 300 347-1 V2.2.2 (1999-12)
Contents

Intellectual Property Rights..............................................................................................................................10

Foreword...........................................................................................................................................................10

Introduction ......................................................................................................................................................11

1 Scope ......................................................................................................................................................13

2 References..............................................................................................................................................14

3 Definitions and abbreviations ................................................................................................................15

3.1 Definitions........................................................................................................................................................15

3.2 Abbreviations ...................................................................................................................................................17

4 Electrical and physical interface requirements ......................................................................................17

5 Procedural interface requirements .........................................................................................................18

5.1 Link control requirements and procedures .......................................................................................................18

5.1.1 Link-ID verification....................................................................................................................................18

5.1.2 Link blocking..............................................................................................................................................18

6 Services and architecture aspects and requirements ..............................................................................19

6.1 On-demand services .........................................................................................................................................19

6.1.1 PSTN ..........................................................................................................................................................19

6.1.2 ISDN Basic Access (ISDN-BA) .................................................................................................................19

6.1.3 ISDN Primary Rate Access (ISDN-PRA)...................................................................................................20

6.2 Permanent Line (PL) capability........................................................................................................................20

6.3 Semi-permanent leased line..............................................................................................................................20

6.4 Permanent leased line service...........................................................................................................................20

7 Control and provisioning........................................................................................................................21

7.1 Control principles.............................................................................................................................................21

7.1.1 General requirements and assumptions.......................................................................................................21

7.1.2 Control of ISDN-BA user port for the PL capability ..................................................................................23

7.1.3 Control of ISDN-PRA user ports when the PL capability is provided........................................................23

7.1.3.1 Statements and assumptions ..................................................................................................................23

7.1.3.2 ISDN and PL capability ........................................................................................................................23

7.2 Provisioning strategy and requirements............................................................................................................24

7.2.1 General........................................................................................................................................................24

7.2.2 Provisioning requirements ..........................................................................................................................24

7.3 Bearer Channel Connection (BCC) ..................................................................................................................24

7.4 Protection .........................................................................................................................................................25

8 Protocol architecture and multiplexing structure...................................................................................25

8.1 Functional description ......................................................................................................................................25

8.2 Protocol requirements for PSTN and ISDN .....................................................................................................26

8.3 Time slots .........................................................................................................................................................27

8.4 Time slot allocation for physical communication channels ..............................................................................27

8.4.1 Data types for V5.2 C-paths........................................................................................................................28

8.4.2 Communication paths when PSTN is provided on a V5.2 interface ...........................................................28

8.4.3 Communication paths when ISDN is provided on a V5.2 interface............................................................28

8.5 Layer 2 sublayering and multiplexing on communication channels .................................................................29

8.6 Layer 3 multiplexing.........................................................................................................................................29

8.7 Congestion control............................................................................................................................................29

8.7.1 Flow control end to end ..............................................................................................................................29

8.7.2 Congestion control on the V5.2 interface ...................................................................................................29

8.7.3 Blocking of ISDN user ports at layer 2.......................................................................................................29

8.7.4 Flow control using LAPV5-DL mechanisms ..............................................................................................29

ETSI
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SIST EN 300 347-1 V2.2.2:2005
4 ETSI EN 300 347-1 V2.2.2 (1999-12)

9 Envelope Function sublayer of LAPV5 (LAPV5-EF) ...........................................................................29

10 Data Link sublayer of LAPV5 (LAPV5-DL).........................................................................................30

10.1 Frame structure for peer-to-peer communication .............................................................................................30

10.2 Invalid frames...................................................................................................................................................30

10.3 Elements of procedures and formats of fields for data link sublayer peer-to-peer communication ..................30

10.3.1 Link address field format ............................................................................................................................30

10.3.2 Link address field variables ........................................................................................................................30

10.3.2.1 Address field extension bit (EA) ...........................................................................................................30

10.3.2.2 Command/response field bit..................................................................................................................30

10.3.2.3 V5DLaddr .............................................................................................................................................30

10.3.3 Control field formats...................................................................................................................................30

10.3.4 Control field parameters and associated state variables..............................................................................30

10.3.5 Frame types.................................................................................................................................................31

10.4 Definition of the peer-to-peer procedures of the data link sublayer .................................................................31

11 AN frame relay sublayer ........................................................................................................................31

12 Sublayer-to-sublayer communication and mapping function ................................................................31

13 General layer 3 protocol structures ........................................................................................................31

13.1 General .............................................................................................................................................................31

13.2 Information elements that appear in every message (header) ...........................................................................32

13.2.1 Protocol Discriminator information element...............................................................................................32

13.2.2 Layer 3 Address information element.........................................................................................................33

13.2.3 Message Type information element ............................................................................................................33

13.3 Other information elements ..............................................................................................................................34

13.4 Protocol message functional definition and information content......................................................................34

13.5 Codesets ...........................................................................................................................................................34

14 PSTN signalling protocol specification and layer 3 multiplexing .........................................................34

15 Control requirements and protocol ........................................................................................................34

15.1 ISDN-BA user port status indication and control.............................................................................................34

15.2 PSTN user port status indication and control ...................................................................................................35

15.3 ISDN primary rate user port status indication and control ...............................................................................35

15.3.1 General aspects ...........................................................................................................................................35

15.3.2 Events and function elements relevant for the control of the state machines ..............................................36

15.3.3 ISDN-PRA user port FSMs, AN (ISDN port) and LE (ISDN port)............................................................38

15.3.3.1 Description of the states ........................................................................................................................38

15.3.3.2 Definition of port control states.............................................................................................................38

15.3.3.2.1 ISDN-PRA user port FSM - AN (ISDN port) .................................................................................38

15.3.3.2.2 ISDN-PRA user port FSM - LE (ISDN port) ..................................................................................39

15.3.3.3 Principles and procedures .....................................................................................................................39

15.3.3.3.1 General ............................................................................................................................................39

15.3.3.3.2 Blocking ..........................................................................................................................................39

15.3.3.3.3 Blocking request..............................................................................................................................40

15.3.3.3.4 Co-ordinated unblocking .................................................................................................................40

15.3.3.3.5 User failure/network failure indication ............................................................................................40

15.3.3.3.6 Support of the permanent line capability .........................................................................................40

15.3.3.4 ISDN port FSM at the AN.....................................................................................................................41

15.3.3.5 ISDN port FSM at the LE .....................................................................................................................42

15.3.4 Performance monitoring aspects.................................................................................................................42

15.4 Control protocol ...............................................................................................................................................43

15.4.1 Control protocol message definition and content........................................................................................43

15.4.2 General message format and information element coding ..........................................................................43

15.4.3 State definition of the control protocol .......................................................................................................44

15.4.4 Control protocol procedures .......................................................................................................................44

15.4.5 Accelerated alignment of the port related protocol entities and FSMs .......................................................45

15.5 V5.2 re-provisioning procedures ......................................................................................................................45

16 Link control requirements and protocol.................................................................................................46

16.1 2 048 kbit/s layer 1 link maintenance requirements..........................................................................................47

ETSI
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SIST EN 300 347-1 V2.2.2:2005
5 ETSI EN 300 347-1 V2.2.2 (1999-12)

16.1.1 Events and failure reports ...........................................................................................................................47

16.1.2 Detection algorithm for events and signals .................................................................................................48

16.1.3 V5.2 interface layer 1 link FSM..................................................................................................................48

16.1.4 Requirements and procedures for the additional functions .........................................................................50

16.2 Link control requirements and procedures .......................................................................................................50

16.2.1 The link blocking and unblocking...............................................................................................................50

16.2.2 The link identification.................................................................................................................................51

16.2.3 Events and function elements relevant for the control of the link state machines.......................................52

16.2.4 Link control FSM, AN (link) and LE (link)................................................................................................53

16.2.4.1 Description of the states ........................................................................................................................53

16.2.4.2 Definition of link control states and general co-ordination requirements..............................................54

16.2.4.2.1 Link control FSM - AN (AN_Link).................................................................................................54

16.2.4.2.2 Link control FSM - LE (LE_Link) ..................................................................................................55

16.2.4.3 Principles and procedures .....................................................................................................................55

16.2.4.3.1 General ............................................................................................................................................55

16.2.4.3.2 Link blocking...................................................................................................................................56

16.2.4.3.3 Link blocking request ......................................................................................................................56

16.2.4.3.4 Co-ordinated link unblocking ..........................................................................................................56

16.2.4.3.5 Link identification ...........................................................................................................................57

16.2.4.4 Link control FSM at the AN..................................................................................................................58

16.2.4.5 Link control FSM at the LE ..................................................................................................................59

16.3 Link control protocol........................................................................................................................................60

16.3.1 Link control protocol message definition and content ................................................................................60

16.3.1.1 LINK CONTROL message ...................................................................................................................60

16.3.1.2 LINK CONTROL ACK message..........................................................................................................60

16.3.2 Link control protocol information element definition, structure and coding...............................................61

16.3.2.1 Layer 3 address information element ....................................................................................................61

16.3.2.2 Link control function information element............................................................................................61

16.3.3 Definitions of the link control protocol states.............................................................................................62

16.3.4 Link control protocol procedure .................................................................................................................62

16.3.4.1 General..................................................................................................................................................62

16.3.4.2 Start traffic indication............................................................................................................................63

16.3.4.2.1 Normal operation.............................................................................................................................63

16.3.4.2.2 Exceptional procedures....................................................................................................................63

16.3.4.3 Stop traffic indication............................................................................................................................63

16.3.4.3.1 Normal operation.............................................................................................................................63

16.3.4.3.2 Exceptional procedures....................................................................................................................63

16.3.4.4 Link control layer 3 protocol entity procedure......................................................................................63

16.3.5 Handling of error conditions.......................................................................................................................64

16.3.5.1 Protocol discriminator error ..................................................................................................................64

16.3.5.2 Layer 3 address error.............................................................................................................................64

16.3.5.3 Message type error ................................................................................................................................64

16.3.5.4 Repeated information elements .............................................................................................................64

16.3.5.5 Mandatory information element missing...............................................................................................64

16.3.5.6 Unrecognized information element .......................................................................................................64

16.3.5.7 Content error of mandatory information elements.................................................................................65

16.3.6 Timers for the link control protocol............................................................................................................65

16.3.7 AN and LE side layer 3 protocol entity state tables....................................................................................65

17 BCC protocol elements and procedures.................................................................................................66

17.1 General .............................................................................................................................................................66

17.2 BCC protocol entity definition .........................................................................................................................68

17.2.1 Definition of BCC protocol states...............................................................................................................68

17.2.1.1 BCC states in the AN ............................................................................................................................68

17.2.1.2 BCC states in the LE .............................................................................................................................69

17.2.2 Definition of BCC protocol primitives, messages and timers .....................................................................70

17.3 BCC protocol message definition and content..................................................................................................71

17.3.1 ALLOCATION message ............................................................................................................................72

17.3.2 ALLOCATION COMPLETE message ......................................................................................................72

17.3.3 ALLOCATION REJECT message .............................................................................................................73

17.3.4 DE-ALLOCATION message......................................................................................................................73

ETSI
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SIST EN 300 347-1 V2.2.2:2005
6 ETSI EN 300 347-1 V2.2.2 (1999-12)

17.3.5 DE-ALLOCATION COMPLETE message................................................................................................74

17.3.6 DE-ALLOCATION REJECT message.......................................................................................................74

17.3.7 AUDIT message .........................................................................................................................................74

17.3.8 AUDIT COMPLETE message....................................................................................................................75

17.3.9 AN FAULT message ..................................................................................................................................76

17.3.10 AN FAULT ACKNOWLEDGE message...................................................................................................76

17.3.11 PROTOCOL ERROR message...................................................................................................................76

17.4 BCC information element definition, structure and coding ..............................................................................77

17.4.1 BCC Reference Number information element ............................................................................................77

17.4.2 Other information elements.........................................................................................................................77

17.4.2.1 User Port Identification information element ........................................................................................78

17.4.2.2 ISDN Port Time Slot Identification information element......................................................................78

17.4.2.3 V5 Time Slot Identification information element..................................................................................79

17.4.2.4 Multi-Slot Map information element.....................................................................................................79

17.4.2.5 Reject Cause information element.........................................................................................................80

17.4.2.6 Protocol Error Cause information element.............................................

...

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